Clear cell renal cell carcinoma (ccRCC) is an aggressive subtype of renal cell carcinoma. X-C motif chemokine receptor 1 (XCR1) exerts important roles in tumor progression; however, its role in ccRCC is unclear.
We utilized publicly available data from The Cancer Genome Atlas (TCGA) to assess the role of XCR1 in ccRCC and validated the results in 36 samples from patients with ccRCC who underwent curative resection in Xinqiao Hospital Chongqing. XCR1 overexpression was identified in ccRCC, which was confirmed by qRT-PCR assay and immunohistochemical staining of ccRCC samples.
For the TCGA and clinical data, Kaplan-Meier survival analysis revealed that higher XCR1 expression in ccRCC was related to longer overall survival. Cox regression analysis suggested that XCR1 is an independent risk factor for ccRCC. GSEA analysis suggested that XCR1 is associated with the JAK/STAT signaling pathway. XCR1 knockdown by small interfering RNA (siRNA) significantly increased ccRCC cell proliferation and migration, and decreased cell apoptosis.
We found higher XCR1 expression in ccRCC compared with that in normal tissues is related to longer overall survival in patients with ccRCC. XCR1 knockdown significantly increased RCC cells proliferation and migration, and decreased apoptosis. XCR1 might be used as a prognostic biomarker in ccRCC in the future.
Molecular genetics & genomic medicine. 2020 Dec 30 [Epub ahead of print]
Xian Chang, Ya Cao, Wan-Lei Fu, Xue-Feng Tang, Ya-Li Wang, Yang-Fan Lv, Qiao-Nan Guo
Department of Orthopedics, Xinqiao Hospital, Third Military Medical University (Army Medical University, Chongqing, P. R. China., Department of Pathology, Xinqiao Hospital, Third Military Medical University (Army Medical University, Chongqing, P. R. China.